move to cpu and roberta-base alignscore

generation_evaluator.py

@@ -120,7 +120,7 @@ BERT_SCORE:{
     "hashcode": Hashcode of the library.
 },
 AlignScore:{
-    "score": mean align scores using roberta-large as scorer
+    "score": mean align scores using roberta-base as scorer
 },
 CHRF:{
     'score' (float): The chrF (chrF++) score,
@@ -131,10 +131,10 @@ CHRF:{
 """
 
 ALIGNSCORE_ARGS = {
-    "model": "roberta-large",
+    "model": "roberta-base",
     "batch_size": 32,
-    "device": "cuda",
-    "ckpt_path": "https://huggingface.co/yzha/AlignScore/resolve/main/AlignScore-large.ckpt",
+    "device": "cpu",
+    "ckpt_path": "https://huggingface.co/yzha/AlignScore/resolve/main/AlignScore-base.ckpt",
     "evaluation_mode": "nli_sp",
 }